*{
    margin: 0;
    padding: 0;
    border: 0;
}
body{
    font-family:"Microsoft YaHei","Helvetica","Arial","Georgia","monospace";
    font-size: 18px;
    width: 100%;
    margin: 0px auto;
}
a{
    text-decoration: none;
}
header{
	position: fixed;
	width:100%;
	height:40px;
	top:0;
    text-align: center;
    background: rgb(0, 171, 253);
}

header ul li{
    float:left;
    color:#ffffff;
    list-style:none;
    padding:5px 0 5px 0;
}
header h4{
	padding:5px;
    width: 100%;
    font-size: 20px;
    color:#ffffff;
    background: rgb(0, 171, 253);
}
header img{
	width:40%;
	height:40%;
}
.pre{
 	margin-left:8%;
}
.showTitle{
  	margin-left:20%;
}
.next{
    margin-left:15%;
}
.hides{
    display: none;
}
